
$(function(){
	//  生成二维码
    $("#code").qrcode({ 
	    render: "table", //table方式 
	    width: 160, //宽度 
	    height:160, //高度 
	    text: toUtf8("兑换积分")//任意内容 
	})
//在二维码编码前，将二维码的内容字符串转换成UTF-8格式
	function toUtf8(str) {    
	    var out, i, len, c;    
	    out = "";    
	    len = str.length;    
	    for(i = 0; i < len; i++) {    
	        c = str.charCodeAt(i);    
	        if ((c >= 0x0001) && (c <= 0x007F)) {    
	            out += str.charAt(i);    
	        } else if (c > 0x07FF) {    
	            out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));    
	            out += String.fromCharCode(0x80 | ((c >>  6) & 0x3F));    
	            out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));    
	        } else {    
	            out += String.fromCharCode(0xC0 | ((c >>  6) & 0x1F));    
	            out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));    
	        }    
	    }    
	    return out;    
	} 
})
